i. 0.3 = 0.30 and -0.5 = -0.50
We know that,
0. 30 >0.29 >….. >0.10>.. > – 0.10>…. > -0.30>…> -0.50
∴ the three rational numbers between 0.3 and -0.5 are -0.3, -0.1 and 0.1
Alternate Method:
A rational number between two rational numbers a and b
∴ the three rational numbers between 0.3 and -0.5 are -0.3, -0.1 and 0.1.
ii. -2.3 = -2.300 and -2.33 = -2.330
We know that, -2.300 > -2.301>… > -2.310>…> -2.320>…> -2.330
∴ the three rational numbers between -2.3 and -2.33 are -2.310, -2.320 and -2.325.
iii. 5.2 = 5.20 and 5.3 = 5.30
We know that, 5.20 < 5.21 < 5.22 < 5.23 < … < 5.30
∴ the three rational numbers between 5.2 and 5.3 are 5.21, 5.22 and 5.23.
iv. -4.5 = -4.50 and -4.6 = -4.60
We know that, -4.50 > -4.51 > -4.52 >… > – 4.55 >…>- 4.60
∴ the three rational numbers between -4.5 and -4.6 are -4.51, -4.52 and -4.55.